Albert a



(No Modl.)

A.. A. PAGE.

DOOR SPRING.

No 478,355. Patnted July 5, 1892.

cam: rams-cm, main-1.1mm, WASHINGYON, 0. cv

UNITED STATES PATENT OFFICE.

ALBERT A. PAGE, OF NEWV HAVEN, CONNECTICUT, ASSIGNOR TO THE SARGENT &COMPANY, OF SAME PLACE.

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent N 0. 478,355, dated July 5,1892. Application filed January 6, 1892. Serial No. 417,137. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALBERT A. PAGE, of New Haven, in the county of NewHaven and State of Connecticut, have invented a new Improvement inDoor-Springs and I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a plan view of a door-spring constructed in accordance with myinvention with the lever coupled with the clutch-collar; Fig. 2, acorresponding view with the lever uncoupled from the collar; Fig. 3, aView of the device in side elevation; Fig. at, a reverse plan view ofthe same.

My invention relates to an improvement in door-springs, the object beingto produce a simple, cheap, efficient, and. durable device adapted to bereadily adjusted for changing the tension of its spring.

With these ends in view my invention consists in the combination, with acase, coiled spring, and spring-shaft, of a clutch-collar rigidlyattached to a projecting end of the said shaft and having a series ofperipheral retaining-notches formed in it, a lever bearin g upon theupper face of the said collar and loosely connected with the said shaftthrough an elongated slot formed in its extreme inner end, a clutch-pinmounted in the lever in position to be entered into the said notches ofthe collar, and a stop for locking the shaft against rotation. I

My invention further consists in certain details of constructionandcombinationsof parts, as will be hereinafter described, and pointedout in the claims.

As herein shown, the box or case A, which may be of any approvedconstruction, is furnished with a foot or flange A, by means of which itis secured in place. It contains a reversible spring B, having its outerend connected with it and its inner end attached to a shaft C, theopposite ends whereof are j ournaled in the opposite sides of the caseA, the said spring being reversible'to adapt the device to be used ondoors opening either to the right or to the left. A clutch-collar D,rigidly attached to one of the projecting ends of the said shaft, isconstructed with a circular series of retaining-notches D, which receivea rigid clutch-pin E, depending from the lower face of the lever F, theextreme inner end whereof is constructed with an elongated slot F,through which it is loosely connected by means of a screw'G with thesaid end of the shaft, whereby the lever is longitudinally. movable withreference thereto, so as to permit its clutch-pin E to be entered intoor withdrawn from any one of the retaining-notches D in theclutch-collar D The opposite end of the shaft C also projects out of thecase and is constructed with a transverse slot C in which is pivoted ona pin 0 a stop-dog H, having two oppositely-projecting lugs h h formedupon its end for engagement with a circular series of notches I, formedin a hub I, located upon the adjacent face of the case A. I do not,however, limit myself to the use of the particular stop described inconnection with the coupling device first set forth.

When it is desired to wind the spring, for instance, the lever F ismoved longitudinally toward the clutch-collar and the clutch-pin Eentered into one of the notches thereof, after which the collar andhence the shaft C, is turned by means of the lever as much as it isconvenient to turn the same. This point being reached, the other hand isemployed to engage one of the lugs of the pivotal stop-dog II with thenearest notchI in the huh I, the said stop-dog being held'up by handinto its operative position until the tension of the spring hasdeveloped sufficient friction be-. tween it and oneof thewalls of thenotch into which its lug has been entered to hold-it in place. Afterthis the lever F is pulled outward to disengage its clutch-pin from theretaining-notch into which it was first entered, and it is swept aroundover the collar and engaged With another notchthereinbya correspondinginward movement, and the collar is turned again,and so on. The sameoperation is repeated for winding the spring in the other direction orfor letting the spring down in IOO erty to make such changes andalterations therein as fairly fall Within the spirit and scope of myinvention.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. In a door-spring, the combination, with a case, coiled spring, andspring-shaft, of a clutch-collar rigidly attached to a projecting end ofthe said shaft and having a series of peripheral retaining-notchesformed in it, a lever bearing upon the upper face of the said collar andloosely connected with the said shaft through an elongated slot formedin its extreme inner end, a clutch-pin m'ounted in the lever in positionto be entered into the said notches of the collar, and a stop forlocking the shaft against rotation, substantially as described.

2. In a door-spring, the combination, with a case, coiled spring, andspring-shaft, of a clutch-collar rigidly attached to a projecting end ofthe said shaft and having a series of peripheral retaining-notchesformed in it, a lever bearing upon the upper face of the said collar andloosely connected with the said shaft through an elongated slot formedin its extreme inner end, a clutch-pin mounted in the lever in positionto be entered into the said notches of the collar, a double stoppivotally mounted in the opposite end of the shaft, and a circularseries of retaining-points located upon the adjacent face of the saidcase for engagement by the said double stop, substantially as described.a

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

ALBERT A. PAGE. IVitnesses:

ll. 11. EST, I .I. F. GILLETTE.

